20519280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28499}}^1$

素因数の和:28518

約数の個数: 60

約数和(自身を含む): 68913000

約数和(自身を除く): 48393720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28499, 56998, 85497, 113996, 142495, 170994, 227992, 256491, 284990, 341988, 427485, 455984, 512982, 569980, 683976, 854970, 1025964, 1139960, 1282455, 1367952, 1709940, 2051928, 2279920, 2564910, 3419880, 4103856, 5129820, 6839760, 10259640, 20519280]

約数ペア:

[(1, 20519280), (2, 10259640), (3, 6839760), (4, 5129820), (5, 4103856), (6, 3419880), (8, 2564910), (9, 2279920), (10, 2051928), (12, 1709940), (15, 1367952), (16, 1282455), (18, 1139960), (20, 1025964), (24, 854970), (30, 683976), (36, 569980), (40, 512982), (45, 455984), (48, 427485), (60, 341988), (72, 284990), (80, 256491), (90, 227992), (120, 170994), (144, 142495), (180, 113996), (240, 85497), (360, 56998), (720, 28499)]